Sutton- or Collins-type. Drawn for several latitudes. Scale on limb divided 2 ways- 0°-90° counter clockwise and 00° at line of sixty, running clockwise to 66.5 and counter clockwise to 30°. Above civil calendar lies line of zodiac with signs. On reverse are stars- 12 listed by R.A., preceded by star symbol and followed by declination and magnitude.
Материал
"W. Hayes fecit". An additional inscription "Dublin 1740" is of a later date.
